Marin Mersenne 2^P-1
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MnStatusDetails
101197Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
237675168260571444.4old
44378935867130839540429582382815133108.52016-10-29 23:25:58
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000780 / 1566
Estimated T-Level: 32.5 ⓘ
TF below 2^103 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver Kruse6ED27720CFAE642E2013
Verified2017-10-09Chang Chia-Tche6ED27720CFAE642E2013
Verified2017-10-13kkmrkkblmbrbk6ED27720CFAE642E27482613
Verified2020-04-17Oliver KruseD5791A2FBEA5117D21317053
Verified2022-04-15LordJuliusD5791A2FBEA5117D26503353
P-1 factors
DateFactorB1B2
2016-10-294437893586713083954042958238281511000000002000000000
History
DateUserTypeResult
2022-12-08LordJuliusNF
no factor from 2^64 to 2^65
2022-12-08LordJuliusNF
no factor from 2^63 to 2^64
2022-12-08LordJuliusNF
no factor from 2^62 to 2^63
2022-04-15LordJuliusC-PRP
M101197/23767516826057/443789358671308395404295823828151 : D5791A2FBEA5117D
PRP: Verified
PRP without proof (small exponent)
2022-04-13LordJuliusNF
no factor from 2^61 to 2^62
2022-04-13LordJuliusNF
no factor from 2^60 to 2^61
2022-04-13LordJuliusNF
no factor from 2^59 to 2^60
2022-04-13LordJuliusNF
no factor from 2^58 to 2^59
2022-04-13LordJuliusNF
no factor from 2^57 to 2^58
2021-12-17Seth_TrNF-PM1
B1=1000000000, B2=6734439121410
2020-04-17Oliver KruseC-PRP
M101197/23767516826057/443789358671308395404295823828151 : D5791A2FBEA5117D
PRP: Verified
PRP without proof (small exponent)
2018-11-02J.R. AllenNF
no factor from 2^59 to 2^60
2018-11-02J.R. AllenNF
no factor from 2^58 to 2^59
2018-11-02J.R. AllenNF
no factor from 2^57 to 2^58
2018-11-02J.R. AllenNF
no factor from 2^52 to 2^57
2017-10-13kkmrkkblmbrbkC-PRP
M101197/23767516826057/443789358671308395404295823828151 : 6ED27720CFAE642E
PRP: Verified
PRP without proof (not generated)
2017-10-09Chang Chia-TcheC-PRP
M101197/known_factors : 6ED27720CFAE642E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M101197/23767516826057/443789358671308395404295823828151 : 6ED27720CFAE642E
PRP without proof (not generated)
2016-10-29kkmrkkblmbrbkF-PM1
Factor: 443789358671308395404295823828151 / (P-1, B1=100000000, B2=2000000000, E=12)